ConvertFS is a very simple but extremely powerful toolset which
allows users to convert one file system to another. It works for
converting virtually any filesystem type to virtually any one as
long as they are both block-oriented and supported by Linux for
read/write, and as long as primary filesystem supports sparse
files.
* devclone - Utility to make clone of the block device (sparse
file of the same size).
* devremap - Core of the toolset - block relocation utility.
* prepindex - Utility to prepare index (list of raw blocks) of
filesystem image.